Hey all,
Long-time lurker, rare poster here! I am having a fit with my 5.0 Thunderbolt V carbed engine which is in a Bayliner 205. The current issue at hand is that I am only receiving around 7 volts to my fuel pump, but here is the backstory.
Bat sat in my driveway (covered) and we got a ton of rain. Changed oil and filter/fuel filter, as well as new spark plugs. Went to start the engine on muffs one more time before I put it in the water and the engine would begin to turn over and then make a heavy "clunk" that sounded like hydrolock. Engine would eventually fire, but was running awful. Pulled plugs, disconnected fuel pump power at the pump (previous owner installed a quick-connect plug thing), and spun the engine over with the starter to check for water in cylinders. Did not find any, so discovered that the distributor cap had TONS of moisture in it. Dried that out (and temporarily removed the gasket, getting a new one tomorrow morning),put the cap on, reinstalled plugs, and reconnected the fuel pump. Cranked the motor over and it fired right up and ran for about 45 seconds, which I am assuming is just from leftover gas in the system. Then the motor died.
Now, this is where it gets a little sketchy, and I know it is not right, but for now I am playing the cards I am dealt. The previous owner also installed some sort of bypass to the slave solenoid (i think?, because the boat used to just click when trying to start it) instead of replacing it. Essentially, up until this point, the fuel pump has activated whenever the key is in Key-On-Engine-Off position, so I guess you could say it has been straight wired. Now that the boat is all back together, the pump is not running. Took my multimeter to the connections, and am only getting a reading of ~7 volts. Oil pressure is 35-38 when cranking, and motor is turning over very strongly, battery has 12 volts. Where should I start looking in order to find the source of this low voltage? To me, it seems like a condition of a bad ground, but I don't even know where to start! Thanks so much!
Long-time lurker, rare poster here! I am having a fit with my 5.0 Thunderbolt V carbed engine which is in a Bayliner 205. The current issue at hand is that I am only receiving around 7 volts to my fuel pump, but here is the backstory.
Bat sat in my driveway (covered) and we got a ton of rain. Changed oil and filter/fuel filter, as well as new spark plugs. Went to start the engine on muffs one more time before I put it in the water and the engine would begin to turn over and then make a heavy "clunk" that sounded like hydrolock. Engine would eventually fire, but was running awful. Pulled plugs, disconnected fuel pump power at the pump (previous owner installed a quick-connect plug thing), and spun the engine over with the starter to check for water in cylinders. Did not find any, so discovered that the distributor cap had TONS of moisture in it. Dried that out (and temporarily removed the gasket, getting a new one tomorrow morning),put the cap on, reinstalled plugs, and reconnected the fuel pump. Cranked the motor over and it fired right up and ran for about 45 seconds, which I am assuming is just from leftover gas in the system. Then the motor died.
Now, this is where it gets a little sketchy, and I know it is not right, but for now I am playing the cards I am dealt. The previous owner also installed some sort of bypass to the slave solenoid (i think?, because the boat used to just click when trying to start it) instead of replacing it. Essentially, up until this point, the fuel pump has activated whenever the key is in Key-On-Engine-Off position, so I guess you could say it has been straight wired. Now that the boat is all back together, the pump is not running. Took my multimeter to the connections, and am only getting a reading of ~7 volts. Oil pressure is 35-38 when cranking, and motor is turning over very strongly, battery has 12 volts. Where should I start looking in order to find the source of this low voltage? To me, it seems like a condition of a bad ground, but I don't even know where to start! Thanks so much!
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